πήχισμα
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
English (LSJ)
ατος, τό, A cubit-measure, Sm.Ez.43.13.
German (Pape)
[Seite 612] τό, Länge einer Elle, Sp.